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This research is a descriptive study with a qualitative approach. This study aims to describe the mathematical literacy skills of senior high school in solving word problems based on the model of Problem Solving DAPIC (Define, Assess, Plan, Implement, Communicate). This research was conducted in class X of SMA Negeri 16 Surabaya in the 2018/2019 school year. The subjects of this study were 3 students from the X-2 IPS class at senior high school  16 of Surabaya. Data collection techniques used are written tests in the form of story questions and interview guidelines that are validated by validators then given to students to work on and the test results are analyzed by researchers to determine students' mathematical literacy abilities. Interviews were used to obtain data about the mistakes made by students in completing the story matter material of three-variable linear equation systems. The validity of the data is tested by triangulation method. Based on the results of the study, the researcher concluded that students did not write what was known well and precisely because the three subjects thought that writing with an example and mathematical sentences were the known stages of the problem do not write conclusions properly and correctly.

Mathematical Literacy, problem solving DAPIC, Three Variable Linear Equation System